The Osmonds' festive fun at the Andy Williams Christmas Spectacular

The Osmonds put on a festive extravaganza at their 'Andy Williams Christmas Spectacular' concert at the Indigo at The O2 in London on Wednesday night (16.12.15).

The pop veterans paid homage to Christmas and the late performer - who used to host the show at the Andy Williams Moon River Theatre, in Branson - as they sang a medley of seasonal covers including Wizzard's 'I Wish It Could Be Christmas Every Day', Slade's 'Merry Christmas Everybody' and Wham! hit 'Last Christmas'.

The group - which now includes Jimmy, Jay and Merrill Osmond - thrilled the packed auditorium with a number of older festive classics too and proved they've still got the moves, as they trotted across the stage in step.

Britain's Got Talent' star Charlie Green joined the group on stage and sang a stunning rendition of Nina Simone's hit 'Feeling Good', with Jimmy declaring Charlie to be "the real deal".

The second half of the show saw Merrill, 62, Jay, 60, and Jimmy 52, enter the crowd and shake hands and hug their fans, who later got out of their seats and danced at the front of the stage when they ended the night with a medley of old Osmond hits.

The brothers evoked "Osmondmania" once again as they belted out hits such as 'Love Me for a Reason', 'Crazy Horses' and 'Down By The Lazy River'.

Meanwhile, Jimmy introduced the arena to video footage of the musical family - which also includes Donny Osmond, Marie Osmond, Alan Osmond and Wayne Osmond - growing up and told the audience: "I am thrilled to bring 'Andy's Christmas Spectacular' to our friends in the UK. I first appeared on Andy Williams' stage when I was only three years old. My brothers had been singing back-up on Andy's biggest hits and had been regulars on his hit television series for several years.

"It's such a joy to carry on Andy's legacy and continue his treasured holiday tradition."